Snapshot Automation and Trimming of Automation Data

Pro Tools lets you use trim values as snapshots and apply the relative changes (delta values) to the selected automation by using the Trim Automation command. This works in much the same way as the Write Automation command, except that it writes delta values instead of absolute values to automation data.

You can use trim values in writing snapshot automation to any automatable parameter.

To create a snapshot of relative changes in automation data:

1 In the Automation window, make sure that the automation parameters you want to edit are write-enabled. Deselect any parameters whose automation you want to preserve.

2 Select the area of the track you want to edit. All automated controls update to reflect the automation at the beginning of the selection.

3 Move the controls for the parameter up or down by the amount you want to change the data.

4 Choose Edit > Automation and do one of the following:

To write the current delta value to only the currently displayed automation parameter, choose Trim to Current.

– or – 

To write the current delta value for all automation parameters enabled in the Automation window, choose Trim to All Enabled.